Ag3PO4光催化耦合微生物燃料电池去除罗丹明B.pdf

第32卷第2期
无机化学学报
Vol 32 No.2
2016年2月
CHINESE JOURNAL OF INORGANIC CHEMISTRY
216-222
Ag3PO2光催化耦合微生物燃料电池去除罗丹明B
袁华柳丽芬
(エ业生态与环境工程教育部重点实验室,环境生态工程研究实验室
大连理工大学食品与环境学院,盘锦122441)
摘要:以硝酸银、磷酸钠为原料,一步沉淀法制备了AgPO),可见光光催化剂,用硅溶胶将其负载于不锈钢丝网上,经干燥得到光
催化电极。以此光催化电极和碳棒分判作为阴极、阳极,在阳极室加人负载生物产电菌的活性炭颗粒,建立光催化耦合微生物燃
料电池反应器。以罗丹明B(RhB)为模型污染物,考察了光照、底物浓度、pH值等对污染物去除效率与电池产电性能的影响。结
果显示:在100W卤素灯光照下、外接500电阻、pH=10、微生物量1倍,反应4h可去除92%的(50mg?L、200mL)RhB;此
时电池输出电压和功率密度分别为124mV、34.9mW-m2。5次重复实验表明该负载型光催化电极具有很好的稳定性
关键词:磷酸银:罗丹明B:微生物燃料电池;可见光光催化
中图分类号:O614.122文献标示码:A文稿编号:1001-4861(2016)02-021607
DOI:10.11862/CJIC.2016.030
Removal of RHB by Photocatalysis with Ag, PO,on Stainless Steel Integrated in
Microbial Fuel Cell as Photocathode
YUAN Hua LIU Li-fen
(MOE Key Lab of Industrial Ecology and knwironmenta Engineering, School of Food and Enironment, Dalian University of
Technology, Panjin, Liaoning, 122441 China
Abstract: Ag PO, visible light photocatalyst was prepared by one step precipitation method from silver nitrate and
sodium phosphate. It was loaded onto stainless steel mesh support using silica sol, then the photocatalytic
electrode was obtained after drying. Using supported photocatalytic electrode and carbon rod as the cathode and
the anode respectively, filling granular carbon already loaded with electrogenic microbes in anode chamber, and
the coupled photocatalytic microbial fuel cell reactor was established. With RHB as a model pollutant, the effects
of light intensity, substrate concentration, PH value on removal efficiency and the electricity generation were
studied. The results showed: using 100 W halogen light, a 500 n external resistance, at pl=10, and 1.5 times
microbial biomass, after 4 h reaction, 92% RHB in 200 mi 50 ml solution was removed at this time the
output voltage and the power densities were respectively 124 mv and 34.9 mwm. The supported photocatal ytic
electrode is stable after five times reuses
Keywords: silver phosphate; rodamine B; microbial fuel cell; visible light photocatalysis
污染少等优点,其重要的前沿研究进展均围绕新型
可见光响应催化剂展开,如AB,O型的AgCO、
高级氧化光催化水处理技术,具有能耗低、二次BiVO-?、 Srtio?等,以更好利用太阳能进行污染控
收稿日期:2015-06-28。收修改稿日期:2015-10-13。
国家自然科学基金(No.21177018)资助项目。
*通信联系人。F-mail:lifenliu(@dlut.edu.cn